[Oz Cello]

I make all the changes on one tablet, then sync that to a cloud folder (using the 'sync device' function), then sync the other tablets to the cloud folder (again with the 'sync device' function). You can also just sync the other tablets directly to the first tablet but having them synced to the cloud means that there's a backup. You can also use backup/restore to copy the files from one tablet to another but that's much slower than using 'sync device'. How are you going about it?